Reversible ratchet-wrench



(No Model 7 E. M. TYLER.

REVERSIBLE RATGHET WRENCH.

PatentedApr. 26, 1898.

/-/v VEN 70/? A TTOHNEYS WITNESSES I EH5 ca, PHMO-UTNO" wuumswu v cUNITED STATES PATENT FFICE.

ELIAS M. TYLER, OF AUBURN, CALIFORNIA.

REVERSIBLE RATCHET-WRENCH.

SPECIFICATION forming part of Letters Patent No. 603,159, dated April26, 1898.

- Application filed tober 7,1897.

T0 aZZ whom; it may concern.-

Be it known that I, ELIAS M. TYLEE, of Auburn, in the county of Placerand State of Oalifornia,have invented a new and Improved ReversibleRatchet-Wrenoh,of whichthe following is a full, clear, and exactdescription.

The object of the invention is to providea new and improved reversibleratchet-wrench which is simple and durable in construction and readilyapplied on nuts and other objects for conveniently turning the same ineither direction.

The invention consists of a socket provided with a ratchet-wheel engagedat'opposite sides by pawls formed with inclines and a movable cam-blockunder the control of the operator and provided with cam-faces forengagement with the said inclines to throw either of the said pawls outof mesh with each other.

The invention also consists of certain parts and details andcombinations of the same, as will be fully described hereinafter andthen pointed out in the claims. I

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure l is a side elevation of the improvement. Fig. 2 is a sectionalplan view of the same on the line 2 2 of Fig. 1. Fig.8 is a plan view ofpartof the casing. Fig. 4 is a sectional side elevation of the same onthe line at 4 of Fig. 3. Fig. 5 is a side elevation of the ratchet-Wheelsocket with an auxiliary socket attached, and Fig. 6 is a sectional planView of the same onthe line 6. 6 of Fig. 5.

The improved reversible ratchet-Wrench is provided with a socket A, onwhich is formed or secured a ratchet wheel B, and the said socket A ismounted to turn in a casing 0, provided with two plates 0 0 formed attheir rear ends with half-round extensions 0 O, on which screws a handleD for securely holding the parts of the casing in position with theratchet-wheel B between the plates 0 O Suitable rivets E E E are alsoemployed for connecting the plates 0 G with each other, and a clampF isalso used in conjunction between the plates C O and their half-roundextensions 0 O to securely connect the casin g parts with each other,the said clamp F being provided for this purpose with Serial No.654,378. (No model.)

the teeth of the ratchet-wheel B by a spring H, preferably made V-shapedand connected at its ends with lugs G secured near the free ends of thepawls G G and at the inner faces thereof, as indicated in Fig. 2.

On the opposed faces of the pawls G G are formed inclines G G,respectively, adapted to be engaged by cam-faces I I on a block I,

fitted to slide longitudinally in the casing and arranged so that eitherthe cam-facel en gages the incline G or the cam-face I engages theincline G it being expressly understood that when such engagement takesplace by one cam-face the other cam-face is out of engagement with itsincline.

The cam-block I is provided with a stem 1 extending rearwardly throughthe clamp F and formed with a head I, fitted to slide in an openingformed by the two half-round extensions O C of the casing, and the saidhead I is engaged by a transversely-extending pin J, passing throughslots 0 in the handle-casing, to connect with a ring or collar J, fittedto slide on the cylindrical extension parts 0 O of the casing.

The block I is formed with a slot 1 for the passage of the rivet E,which thus serves as a guide for the said block I, said block being alsoslotted laterally for the passage of the middle portion of the spring H,so as to hold the latter in place within the casing.

By the arrangement described the operator can readily push the ringforward, so as to move the block I in a like direction and to cause thecam-face 1 thereof to move in engagement with the incline G to press thepawl G outward out of mesh With the ratchetwheel B. The other pawl Gremains in mesh during this operation, and when the ratchet- Wrench isnow applied and swung in the direction of the arrow (1 then theratchet-wheel B and the socket A are turned in the same direction; buton the return stroke of the handle D the pawl G will glide over theteeth of the ratchet-wheel B. \Vhenit is desired to turn the object inengagement with the socket A in the opposite direction, then theoperator slides the collaror ring J rearwardly to move the cam-face Iout of engagement with the incline G to allow the pawl G to again movein mesh with the ratchet-wheel B. At the same time the rearward movementof the block I brings the cam-face I in engagement with the incline G sothat the pawl G is swung outward out of mesh with the ratchet-wheel B.Now when the handle D is swung in the direction of the arrow a the pawlG glides over the teeth of the ratchetwheel; but upon moving the handlein the inverse direction of the arrow at the pawl G turns theratchet-wheel l3 and with it the socket A and the object graspedthereby.

In order to relieve the rivets E E of the strain incident to the pawlspushing the ratchet-wheel B, I rest the fulerumed ends of the said pawlsin seats 011 the clamp F, so that the latter takes up the strain insteadof the rivets. The lugs F of the clamp F also serve to limit the forwardsliding motion of the ring or collar J when the latter is shifted forthrowing either of the pawls in orout of mesh, as above mentioned.

If it is desired to use an auxiliary socket for large objects, I provideone end A of the socket A with the slot A adapted to be engaged by aspring K, held on an auxiliary socket L, fitting over the polygonal endA of the socket A. By this arrangement the auxiliary socket L issecurely held in place on the said end A of the socket A.

It will be seen by the arrangement de scribed a ratchet-wrench of verysimple and durable construction is produced, the wrench not being liableto get out of order.

It will further be seen that the operator can readily manipulate thering or collar J for making the wrench reversible, according to thedirection in which the object is to be turned.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. A reversible ratchet-wrench, provided with asocket having a ratchet-wheel, springpressed pawls engaging the saidwheel at opposite sides, the pawls being provided 011 their inner faceswith inclines, and a cam-block mounted between and to slidelongitudinally of the pawls to alternately engage them, and armsattached to the cam-block and engageable by the operator, substantiallyas described.

2. A reversible ratchet-wrench comprising a casing, a socket mounted toturn in the said casing and provided with a ratchet-wheel,spring-pressed pawls for engagement with the ratchet-wheel at oppositesides, the pawls being pivoted in the said casing and provided at theirinner faces with inclines, a movable cam-block within the said casingand provided with cam-faces, for engagement with the said inclines tothrow either of the said pawls out of mesh with the ratchet-wheel, and aring slidable on the said casing and connected with the said block,substantially as shown and described.

3. A reversible ratchet-wrench, provided with a sockethavingaratchet-wheel, springpressed pawls engaging said wheel onopposite sides, the pawls being provided in their inner faces withinclines, a earn-block between the pawls and having a longitudinal slot,a pin passing through said slot, a rearward extension of said blockhaving guiding contact with the handle, a cross-pin fixed to saidextension and projecting outside the handle, and a ring fixed to saidpin and surrounding the handle.

4. A reversible ratchet-wrench provided with a casing comprising twoplates spaced apart and formed with semieylindrical extensions, a handlescrewing on the said extensions, a clamp engaging the plates at theextensions, the said clamp being provided with lugs projecting ever partof the cylindrical extensions, substantially as shown and described.

5. A reversible ratchet-wrench provided with a socket having a squareend formed with a recess, and an auxiliary socket fitted upon the saidend and carrying a spring for engagement with the said recess,substantially as shown and described.

ELIAS M. TYLER.

Witnesses:

C. A. BIEKEY, II. V. IIART.

